Triturating-machine.



D. VECCHINI, TRITURATNG MACHINE. APPLICATION FILED MAY 21. m14.

2 SHEETS-SHEET l.

J6 l l) DLUMBIA PLANOORAPH C0.. WABHINCITDN. n. C.

i DOMINIQUE 'VECCHINL OF NEW YORK,

TRITURATINe-MACHINE.

To all/whom t may concern.' 4 l Y* Y Be 1t known that ,A DOMINIQUE VEcoHINI,

i a citizen of the Republic of France,`r'esiding at ,New York city, in the State of New York,- have invented certain new and useful 11n provements in Triturating-Machines; and l do hereby declare the following to be a full,

clear, and exact description of the invention,

such as will enable others skilled in the art My invention relates to the extraction and' withdrawal of rubber from rubber-bearing plants'v or rubber-likebearing plants or shrubs.

All processes now in existence for the extraction of rubber from Guayule shrubs. are based on the principle of grinding and pulverizing the shrubs, so as to obtain thev separation of the rubber by iotation.

There are a great number of rubber plants wherein the rubber is in the form of filaments 'and not vesicles, as in the Guayule shrubs. If the Guayule process is applied to such rubber-bearing -plants it is impossible to obtain the rubber, because the crushing and cutting will necessarily reduce the filaments of rubber to such astate as tomake it impossible to agglomerate. It is therefore necessary to construct a machine that, has a triturating action without a cuttingactio'n, so that the plants can be triturated without tearing or severing` the rubber vesicles.

The subject matter of this application is such a machine, illustrated by way of eX- ample in the accompanying` drawings, in which- Figure 1 is a vertical section, partly in elevation. Fig. 2 is a detail view of the outer triturating element for the rst stage; Figs. 3, 4, 5 and 6 are views illustrating, respectively, the inner triturating elements for the second, third, fourth and fifth stages; Fig` 7 is a detail view of a portion of the outer triturating element that coperates with the elements illustrated in Figs. 3, 45 and 6. Fig. 8 is a cross-section showing the profile of the triturating ribs.

The machine comprises a frame 1, having a cast-ironbed-plate 2, on which is secured a step or bearing 3, containing a ball thrustbearing 4 for the reduced end 5 of the grind v,are used, 'will-v. depend, Vvin general, upon the bolted together, by bolts'24.

ing'shaft thejupper'endl7 `:of which is lprovided with one `or more triturating heli-A kces or spirals 8. y v f' Whether one `or more trlturating 'helicesl Nj. Y., Assrenon, BY MEsNEAssIGNMENTsVTof FRANCO-AMEMCAN RUBBER. ceMrANY, or;wILi/rINeTorL,benamrane.` f

Specification ofLetters Patent. 'PatntQdNovfZlglSi 1f Applieanoafueanayzi,1914.lsrai'naskiaess. i'

average size ofthe shrubs; for small shrubs a nu'rnberjof suchspiralsmay be formed/on th'eshaft. There may be several ysuch shafts, 5', 6, 7, each ,having al-,different number of triturating elements, at 'hand for 'mounting in the machine,"as. occasion' maylrequire.

The frame 1,"vsiupports a sleeve-'like trituf rating element 9, forcoperation with the element 8, andis provided on its inner surface with helical grooves 10'. A hopper 11 is secured to element 9` and has a sheet-iron extension 12. The upper end of theshaft portion 7 projectslintothe .hopper 11 and extension 12, and `has blades A 13 vsecured 'i thereto for feeding the shrubs between the triturating surfaces 8 and 10, n On the lower end of the trituratingelement 9 is screwed the conical triturating element 14 provided y'with locking screwsnl and handles 16 to as-iu, sist in mounting it. `The inner face of this ,element is ,provided with long ribs 17 Fig. 7

alternating With shortribs 18.

Cooperating with cone 14 are four con-y 5 nected truncated elements, 19, 20,21 andA 22, 1

arranged to'form a single cone, the upper,

smaller lelement 19 being held on shaft por# tiony 6 by nuts 23, the truncated cones beingA The smallest'elenient, 19, Figf3, isi providedwith long and short ribs 25 and 26, spaced wide apart, the two followingy elements, 20 and 21, Figs.` 4 and 5, have similar ribs 27, 28, 29 and 30, respectively, spaced closer together, while the last element, 22 Fig. 6, has only long ribs, divergin'g toward their lower ends.

The shaft portion 6 isprovided with a ball thrustrbearing 31, and below it, in the portion v5, is a miter-gear 32 driven by a miter-gear 33 on a driving shaft 34,`mount ed in ball-bearings 35 and 36, The driving shaft 34 carries a sprocket 37 for driving an elevator, should one be desired to carry the shrubs to the hopper.

lt should be noted that none of the triturating ribs have sharp edges, see FigyS, as a shearing or 'cutting action is lto be avoided, and only trituration effected bythe co-acting ribbed surfaces. I v

The shrubs, or only the barks, if desired,-

are preferably subjected to a preliminary crushing between two cylinders, rotating at the same speed. This operation has the effect of crushing, without cutting, and welding the rubber filaments together, and in so doing raises to a considerable degree the facility of extracting the rubber, by crushing the inner stratum of the bark. The material is then fed into the hopper extension 12, and is moved by blades 13 to the screw surfaces 8 and l0. The material is sufficiently triturated between these surfaces to feed between cones 14, and 19, 20, 21 and 22, issuing from the lower cone 22 as a flour, with which the agglomerated rubber is mixed.

The heat developed in the triturating operation assists the agglorneration of the rubber, and the mixed product of the triturating operation is separated by screening.

In F ig. 3, the ribs 25 and 2G which are wide apart,V taper from one end to the other oppositely, and lie preferably at different angles on the surface element 19, z'. e. they differ in pitch. n

In Fig. 4, the ribs 27 and 28 alternate in pairs. Y

In Fig. 5 one short rib and a pair of long ribs alternate, while in Fig. 6v all the ribs are long and taper from their upper wider ends to their lower narrower ends, as do all the long ribs in Figs. 3 to 7 The interspace between the conical stationary and movable triturating members varies from top to bottom, conveniently from one-fourth to one-sixteenth of an inch.

I claiml. A triturating machine comprising an open supporting frame, a cylinder vertically mounted therein, and having a helically grooved internal surface, an inverted conical hopper mounted in the upper end of the cylinder, a vertical shaft journaled at its lower end and having its free end projecting into the hopper, feed blades on the free end of the shaft, a screw having beveled edges formed on the shaft within and coperating with the internal surface of the cylinder, a conical member detachably suspended from the lower end of the cylinder and provided with internal, straight, alternating long and short ribs, a detachably connected element fixed to the shaft within said conical member and having inclined ribs cooperating with the ribs of the conical member, said inclined ribs gradually decreasing in inclination and increasing in number Yfrom the top to the bottom element, and means to rotate the shaft.

2. In a triturating machine, ak feed hopper, a shaft whose free end projects into the hopper, a breaker' on said projecting end, cooperating crushing members below said hopper, one of which is mounted on said shaft, and means to journal said shaft below the breaking and crushing Zones.

3. In a triturating machine, a casing having a feed hopper, a coarse grinder element below said hopper and a triturator element below the grinder element, a driven shaft whose free end projects into the hopper, a breaker element on said shaft, a forcing screw on said shaft coperating with the grinding element and progressive triturating means on said.r shaft coperating with the triturating element on the casing, and means to journal said shaft below the Zones of operation of said elements.

In testimony that I claim the foregoing as my invention, I have signed my name in presence of two subscribing witnesses.

DOMINIQUE VECCHINI. lVitnesses:

A. H. LEVY, HYMAN GORDON.

Copies of this patent may be obtained for ve cents each, by addressing the Commissioner of Patents` Washington, D. C. 

